Interchangeable micrometer frame



J. HALUSKA INTERCHANGEABLE MICROMETER FRAME March 10, 1964 3 Sheets-Sheet 1 Filed Sept. 14,- 1961 INVENTOR. JOSEPH HALUSKA A TTOR NE Y March 10, 1964 J. HALUSKA 'INTERCHANGEABLE MICROMETER FRAME 3 Sheets-Sheet 2 Filed Sept. 14, 1961 INVENTOR.

A TTORNE Y March 10, 1964 J. HALUSKA INTERCHANGEABLE MICROMETER FRAME 3 Sheets-Sheet 5 Filed Sept. 14, 1951 INVENTOR. JOSEPH HALUSKA United States Patent 3,123,917 INTERQI'IANGEAELE PVIECROMETEER FRAME Jeseph Hainslra, 143-=4il 41st Ave, Flushing 55, NY. Filed Sept. 14, 1961, Ser. No. 133,060 2 Claims. (Cl. 33-l70) This invention concerns a micrometer with interchangeable frame head.

According to the invention there is provided a micrometer having a frame head formed of two detachable sections. A first section mounts on a spindle bearing of the micrometer. An anvil section is detachably mounted on the first section and may carry an anvil pin. The pin may be disposed axially parallel or perpendicular to the micrometer spindle. The anvil section may be arranged with a flat end so that the micrometer can be used as a depth of height gauge. When the anvil section is so arranged the flat end can be pivotable on an axis parallel to the micrometer spindle for making measurements in narrow spaces. Anvil sections of different lengths may be provided for varying the measurement capacity of the micrometer.

It is therefore a principal object of the invention to provide a micrometer with interchangeable frame head sections.

A further object is to provide a micrometer with a frame head section adapting the micrometer for use as a depth or height gauge.

Still another object is to provide a micrometer structure adapted to expand the range of measurements of the micrometer by use of anvil sections of different lengths having anvil pins oriented in different directions.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

FIG. 1 is a side elevational view of a micrometer assembly embodying the invention.

FIG. 2 is an end elevational view of the micrometer assembly.

FIG. 3 is a side elevational view of the micrometer spindle structure.

FIG. 4 is an exploded side elevational view of two frame head sections.

FIG. 5 is a sectional view taken on line 5-5 of FIG. 4.

FIG. 6 is an end elevational view of one frame section as seen from line 6-6 of FIG. 4.

FIG. 7 is a sectional view taken on line 7-7 of FIG. 6.

FIG. 8 is a side elevational View of an anvil section.

FIG. 9 is a sectional view taken on line 9-9 of FIG. 8.

FIGS. 10 and 11 are side elevational views of other anvil sections with associated parts of a micrometer shown in dotted lines.

FIG. 12 is a plan view of the anvil section of FIG. 11 taken on line 1212 of FIG. 11.

FIG. 13 is a perspective view of another micrometer assembly according to the invention.

FIG. 14 is a side elevational view of the micrometer assembly of FIG. 13, with the anvil section shown in solid lines and associated micrometer parts shown in dotted lines.

FIG. 15 is a top plan view of the anvil section of FIG. 14 taken on line 1515 of FIG. 14, with the anvil foot rotated 90 from its position in FIG. 14.

Referring to FIGS. 1-5, there is shown a micrometer assembly 29 having a graduated thimble 22 on which is rotatably mounted a sleeve 24 engaged with an axial spindle 26. The thimble can be adjustably positioned and locked by a locknut 28, in a spindle bearing 30. To the extent described, the micrometer assembly is conventional.

The assembly includes a first frame section 32. This section has a cylindrical sleeve portion 34 which receives the spindle bearing 30. A screw 36 threaded in the side of sleeve portion 34 secures the spindle bearing therein. A recess 35 may be formed in the side of the spindle bearing to receive and engage the end of screw 36; see FIG. 3. Depending radially from the sleeve portion 34 is a straight yoke piece or arm 38 with flat side 39. A bolt 46 has a shank portion 42 rotatably engaged in a bore 44 in the yoke arm 38. A pin 46 engages in a circumferential groove 47 in the shank portion 42; see FIG. 7. The head 41 of the bolt is located rearwardly of the yoke arm 38. The threaded forward portion 43 of the shank extends axially parallel to the axis of the sleeve portion 34 and spindle 26. Seated in bores 48, 56 in the yoke arm are two guide rods 52, 54. Rod 52 is shorter than rod 54. The rods extend forwardly parallel to the spindle 26 and axis of sleeve portion 34.

The assembly further includes a detachable anvil sec tion 60. This section is angular-shaped. The rear end is flattened at 55 and is formed with three axially parallel bores 56, 57 and 58. Bore 58 is threaded and receives the threaded portion 43 of bolt 4h. Bores 56 and 57 are smooth and respectively slidably receive the guide rods 52 and 54. By turning the bolt 49 in bore'58 the anvil section 66 can be adjustably positioned with respect to the frame section 32. A setscrew 62 is engaged with a locking nut 64 disposed in a hole 65 in the side of the anvil section. The hole 65 communicates with bores 56 and 57 so that the nut 64 can bear on guide rods 52 and 54 when the screw 62 is tightened; see FIG. 5. This arrangement permits the anvil section to be locked in position with respect to the frame section 32. On the other end 33 of the anvil body 59 axially aligned with spindle 26 and parallel with the guide rods and bores 56-58 is an anvil pin 66 seated in a recess 63.

When the anvil section 60 is mounted on the first frame section 32 and locked in place by the screw and nut 62, 64, the micrometer can be used in conventional fashion to measure distances between the facing ends of the pin 66 and spindle 26.

If larger distances are to be measured, the short anvil section 60 can be replaced by an anvil section 60 having a longer bight 61 as shown in FIG. 10. This bight is considerably longer than spindle 26. Other parts of the micrometer assembly 2t) associated with the anvil section 66% are shown in dotted lines in FIG. 10 and are numbered to correspond with identical parts of assembly 20.

FIGS. 8 and 9 show another anvil section 60', in which the anvil pin 67 is axially perpendicular to the bores 56 58. The pin 67 is internally threaded at its base 68 and is held by a setscrew 76 whose head 72 seats in a bore 73 in the end of the anvil section.

FIGS. 11 and 12 show an anvil section 66 having a flat end 74. This end can be placed on a fiat surface S as indicated in FIG. 11 to measure the distance D between the end of spindle 26 and the surface S. Other parts of the anvil section corresponding to those of anvil section 60 are identically numbered. Associated parts of the micrometer assembly 29 are shown dotted and are identical with corresponding parts of assembly 20.

FIGS. 13-15 show a micrometer assembly 20 in which anvil section 60 has a pivotable foot 75 with fiat end 74 The anvil section can be placed on a flat surface S in the same manner as illustrated for assembly 20 in FIG. 11, to measure the distance D between the end of the spindle 26 and the surface S. The foot is held pivotably on the anvil section by a screw whose head 81 is seated in a recess 82 in the foot. This foot can be turned so that the plane of toes 83 of the foot can be disposed perpendicular C to the plane of the remainder of the anvil section as shown in FIG. 15. This permits the anvil section 60 and spindle 26 to be located closer to a vertical surface S for making measurements D in close quarters. Parts of assembly 20 corresponding to those of assembly 20 are identically numbered.

The invention thus makes it possible to extend the range of measurements of a micrometer by use of interchangeable anvil sections. The micrometer can serve as a depth gauge as well as an inside and outside gauge depending on the particular anvil sections employed.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and that various changes and modifications may be made Within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent 1. In a micrometer assembly including a graduated thimble, a rotatable axially movable spindle, and a cylindrical spindle bearing rotatably supporting said spindle, a first frame section, said section having a cylindrical sleeve portion detachably receiving and holding said spindle bearing, a yoke arm depending radially from said sleeve portion, said arm having a plurality of bores axially parallel to each other and to said spindle, a bolt turnably engaged in one of said bores and having a threaded shank extending outwardly of one side of the arm, and a pair of guide rods seated in the other bores and extending parallel to each other out of said one side of the arm; and an anvil section, said anvil section having an angular shaped body with a flat end facing said one side of said arm, said body having a plura ity of other bores, one of said other bores being threaded and engaging said threaded shank for adjustably positioning said anvil section with espect to the first frame section, said guide rods slidably engaging in the others of said other bores, and locking means carried by said anvil section for engaging the guide rods to lock the position of the anvil section with respect to the first frame section, said anvil section having a foot pivotally mounted at its other end, said foot having a fiat end parallel to said one end of the anvil section for measuring distances between said spindle and said fiat surface.

2. As an article of manufacture, an anvil section for a micrometer assembly, comprising an angular-shaped flat body with a frat end, said body having a plurality of bores axially parallel to each other extending inwardly from said flat end, one of said bores being threaded to receive an adjustment bolt, the others of said bores being smooth to receive guide rods, and a foot pivotally mounted on the other end of said body, said foot having a flat side parallel to said flat end for adapting said assembly to make depth measurements, said foot having aligned toe portions positionable in a plane at angles to the plane of said body.

References Cited in the file of this patent UNITED STATES PATENTS 1,244,263 Voges Oct. 23, 1917 1,312,643 Poillon Aug. 12, 1919 1,361,406 Romig Dec. 7, 1920 1,432,664 Brewer Oct. 17, 1922 1,856,824 Alvey May 3, 1932 2,516,478 Mueller July 25, 1950 2,865,108 Lengyel Dec. 23, 1958 

1. IN A MICROMETER ASSEMBLY INCLUDING A GRADUATED THIMBLE, A ROTATABLE AXIALLY MOVABLE SPINDLE, AND A CYLINDRICAL SPINDLE BEARING ROTATABLY SUPPORTING SAID SPINDLE, A FIRST FRAME SECTION, SAID SECTION HAVING A CYLINDRICAL SLEEVE PORTION DETACHABLY RECEIVING AND HOLDING SAID SPINDLE BEARING, A YOKE ARM DEPENDING RADIALLY FROM SAID SLEEVE PORTION, SAID ARM HAVING A PLURALITY OF BORES AXIALLY PARALLEL TO EACH OTHER AND TO SAID SPINDLE, A BOLT TURNABLY ENGAGED IN ONE OF SAID BORES AND HAVING A THREADED SHANK EXTENDING OUTWARDLY OF ONE SIDE OF THE ARM, AND A PAIR OF GUIDE RODS SEATED IN THE OTHER BORES AND EXTENDING PARALLEL TO EACH OTHER OUT OF SAID ONE SIDE OF THE ARM; AND AN ANVIL SECTION, SAID ANVIL SECTION HAVING AN ANGULAR SHAPED BODY WITH A FLAT END FACING SAID ONE SIDE OF SAID ARM, SAID BODY HAVING A PLURALITY OF OTHER BORES, ONE OF SAID OTHER BORES BEING THREADED AND ENGAGING SAID THREADED SHANK FOR ADJUSTABLY POSITIONING SAID ANVIL SECTION WITH RESPECT TO THE FIRST FRAME SECTION, SAID GUIDE RODS SLIDABLY ENGAGING IN THE OTHERS OF SAID OTHER BORES, AND LOCKING MEANS CARRIED BY SAID AVIL SECTION FOR ENGAGING THE GUIDE RODS TO LOCK THE POSITION OF THE ANVIL SECTION WITH RESPECT TO THE FIRST FRAME SECTION, SAID ANVIL SECTION HAVING A FOOT PIVOTALLY MOUNTED AT ITS OTHER END, SAID FOOT HAVING A FLAT END PARALLEL TO SAID ONE END OF THE ANVIL SECTION FOR MEASURING DISTANCES BETWEEN SAID SPINDLE AND SAID FLAT SURFACE. 